›› 2008, Vol. 29 ›› Issue (4): 1077-1080.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Influence of freeze-thaw on mechanical properties of Lanzhou loess

SONG Chun-xia1,2, QI Ji-lin2, LIU Feng-yin1   

  1. 1. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710048, China; 2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. Lanzhou 730000, China
  • Received:2006-10-08 Online:2008-04-10 Published:2013-07-10

PDF (PC)

1138

Abstract: It has become a common understanding that freeze-thaw cycling is a kind of weathering process which considerably changes geotechnical properties of soils due to cryogenic actions. Therefore, the influence of freeze-thaw must be taken into account when selecting soil parameters for stability and deformation analysis of many geotechnical engineering problems in cold regions where newly exposed soil layers are bound to be submitted to freeze-thaw cycling. The changes in strength parameters (c, φ) and pre-consolidation pressure (Pc) due to freeze-thaw are investigated through testing on a frost-susceptible soil, Lanzhou loess within a wide range of dry density and temperature. The soil samples have all experienced one freeze-thaw cycle. Direct shear and 1-D compression tests are carried out on the samples before and after freeze-thaw. Testing results before and after freeze-thaw are then comparatively analyzed. It is shown that the pre-consolidation pressures and strength parameters are influenced by freeze-thaw.

Key words: freeze-thaw, pre-consolidation pressure, structure

CLC Number: 

  • TU432
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
    • [1] LU Jun-long, ZHANG Yin, . Experimental study of the seismic response of the assembled multi-ribbed wall structure-subsoil system in frequency domain [J]. Rock and Soil Mechanics, 2019, 40(6): 2163-2171.
    [2] YIN Xiao-meng, YAN E-chuan, WANG Lu-nan, WANG Yan-chao, . Effect of water and microstructure on wave velocity anisotropy of schist and its mechanism [J]. Rock and Soil Mechanics, 2019, 40(6): 2221-2230.
    [3] WANG Shi-quan, WEI Ming-li, HE Xing-xing, ZHANG Ting-ting, XUE Qiang, . Study of water transfer mechanism during sediment solidification process based on nuclear magnetic resonance technology [J]. Rock and Soil Mechanics, 2019, 40(5): 1778-1786.
    [4] SHAO Sheng-jun, CHEN Fei, DENG Guo-hua, . Seismic passive earth pressure against the retaining wall of structural loess based on plane strain unified strength formula [J]. Rock and Soil Mechanics, 2019, 40(4): 1255-1262.
    [5] ZHUANG Hai-yang, FU Ji-sai, CHEN Su, CHEN Guo-xing, WANG Xue-jian, . Liquefaction and deformation of the soil foundation around a subway underground structure with a slight inclined ground surface by the shaking table test [J]. Rock and Soil Mechanics, 2019, 40(4): 1263-1272.
    [6] WANG Juan-juan, HAO Yan-zhou, WANG Tie-hang. Experimental study of structural characteristics of unsaturated compacted loess [J]. Rock and Soil Mechanics, 2019, 40(4): 1351-1357.
    [7] GAO Feng, XIONG Xin, ZHOU Ke-ping, LI Jie-lin, SHI Wen-chao, . Strength deterioration model of saturated sandstone under freeze-thaw cycles [J]. Rock and Soil Mechanics, 2019, 40(3): 926-932.
    [8] HU Tian-fei, LIU Jian-kun, WANG Tian-liang, YUE Zu-run, . Effect of freeze-thaw cycles on deformation characteristics of a silty clay and its constitutive model with double yield surfaces [J]. Rock and Soil Mechanics, 2019, 40(3): 987-997.
    [9] JIANG Qiang-qiang, LIU Lu-lu, JIAO Yu-yong, WANG Hao, . Strength properties and microstructure characteristics of slip zone soil subjected to wetting-drying cycles [J]. Rock and Soil Mechanics, 2019, 40(3): 1005-1012.
    [10] TANG De-qi, YU Feng, CHEN Yi-tian, LIU Nian-wu, . Model excavation tests on double layered retaining structure composed of existing and supplementary soldier piles [J]. Rock and Soil Mechanics, 2019, 40(3): 1039-1048.
    [11] YU Jin, ZHANG Xin, CAI Yan-yan, LIU Shi-yu, TU Bing-xiong, FU Guo-feng, . Meso-damage and mechanical properties degradation of sandstone under combined effect of water chemical corrosion and freeze-thaw cycles [J]. Rock and Soil Mechanics, 2019, 40(2): 455-464.
    [12] WANG Deng-ke, SUN Liu-tao, WEI Jian-ping, . Microstructure evolution and fracturing mechanism of coal under thermal shock [J]. Rock and Soil Mechanics, 2019, 40(2): 529-538.
    [13] ZHENG Guang-hui, XU Jin-yu, WANG Peng, FANG Xin-yu, WANG Pei-xi, WEN Ming, . Physical characteristics and degradation model of stratified sandstone under freeze-thaw cycling [J]. Rock and Soil Mechanics, 2019, 40(2): 632-641.
    [14] CUI Qi, HOU Jian-guo, SONG Yi-le. Analyses of restraint of surrounding rock and structural vibration characteristics of underground powerhouse for pumped storage power station [J]. Rock and Soil Mechanics, 2019, 40(2): 809-817.
    [15] DENG Hua-feng, WANG Chen-xi-jie, LI Jian-lin, ZHANG Yin-chai, WANG Wei, ZHANG Heng-bin. Influence mechanism of loading rate on tensile strength of sandstone [J]. , 2018, 39(S1): 79-88.
    Viewed
    Full text


    Abstract

    Cited
      Shared   
      Discussed   
    [1] MEI Guo-xiong, LU Ting-hao, CHEN Hao, LI Zhi. True triaxial experiment of foundation pit considering initial stress[J]. , 2010, 31(7): 2079 -2082 .
    [2] LIAN Chuan-jie, XU Wei-ya, WANG Ya-jie, WANG Zhi-hua. Numerical simulation of entry performance supported by a new high strength and high pretension yieldable bolts[J]. , 2010, 31(7): 2329 -2335 .
    [3] XU Fei，XU Wei-ya，WEN Sen，LIU Zao-bao，ZHAO Yan-xi. Projection pursuit based on particle swarm optimization for evaluation of surrounding rock stability[J]. , 2010, 31(11): 3651 -3655 .
    [4] LIN Hang，CAO Ping，LI Jiang-teng，JIANG Xue-liang，HE Zhong-ming. Deformation stability of three-dimensional slope based on Hoek-Brown criterion[J]. , 2010, 31(11): 3656 -3660 .
    [5] SHI Lu，LI Xiao-chun. Analysis of end friction effect in true triaxial test[J]. , 2009, 30(4): 1159 -1164 .
    [6] QIAN Ji-yun, ZHANG Ga, ZHANG Jian-min. Centrifuge model tests for deformation mechanism of soil slope during rainfall[J]. , 2011, 32(2): 398 -402 .
    [7] ZHAO Jia-xi, QI Hui, YANG Zai-lin. Scattering of SH-waves by a shallow buried cylindrical inclusion with a partially debonded curve in half space[J]. , 2009, 30(5): 1297 -1302 .
    [8] WANG Lin , YANG Hai-peng , NIE Qing-ke. Numerical simulation for building settlements and its distribution characteristics using engineering analogy[J]. , 2009, 30(S2): 485 -488 .
    [9] CHEN Shou-kai ，YAN Jun ，LI Jian-ming. Seepage field 3D finite element simulation of concrete faced rockfill dam under failure condition of vertical fracture[J]. , 2011, 32(11): 3473 -3478 .
    [10] CHEN Wei-zhong , CAO Jun-jie , YU Hong-dan , JIA Shan-po , CHEN Pei-shuai. Study of elastoplastic constitutive model of strongly weathered granite Ⅱ: Engineering application[J]. , 2011, 32(12): 3541 -3547 .
    Copyright © Rock and Soil Mechanics, All Rights Reserved.
    Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
    Powered by Beijing Magtech Co. Ltd